From patchwork Tue Jan 21 13:38:54 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aleksandar Markovic X-Patchwork-Id: 1226609 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=rt-rk.com Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 482B2f4jx8z9sRl for ; Wed, 22 Jan 2020 01:37:30 +1100 (AEDT) Received: from localhost ([::1]:55536 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ituel-0003S2-BM for incoming@patchwork.ozlabs.org; Tue, 21 Jan 2020 09:37:27 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:34452) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ittla-0003oO-Fl for qemu-devel@nongnu.org; Tue, 21 Jan 2020 08:40:30 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ittlV-00034M-NU for qemu-devel@nongnu.org; Tue, 21 Jan 2020 08:40:26 -0500 Received: from mx2.rt-rk.com ([89.216.37.149]:54251 helo=mail.rt-rk.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ittlV-0002TQ-B6 for qemu-devel@nongnu.org; Tue, 21 Jan 2020 08:40:21 -0500 Received: from localhost (localhost [127.0.0.1]) by mail.rt-rk.com (Postfix) with ESMTP id D8E861A4593; Tue, 21 Jan 2020 14:39:15 +0100 (CET) X-Virus-Scanned: amavisd-new at rt-rk.com Received: from rtrkw774-lin.domain.local (rtrkw774-lin.domain.local [10.10.14.106]) by mail.rt-rk.com (Postfix) with ESMTPSA id 87BBA1A458E; Tue, 21 Jan 2020 14:39:15 +0100 (CET) From: Aleksandar Markovic To: qemu-devel@nongnu.org Subject: [PATCH v3 2/5] target/mips: Add support for MIPS<32|64>R6 CRC32 ISA Date: Tue, 21 Jan 2020 14:38:54 +0100 Message-Id: <1579613937-5774-3-git-send-email-aleksandar.markovic@rt-rk.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1579613937-5774-1-git-send-email-aleksandar.markovic@rt-rk.com> References: <1579613937-5774-1-git-send-email-aleksandar.markovic@rt-rk.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 89.216.37.149 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: aleksandar.rikalo@rt-rk.com, amarkovic@wavecomp.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Aleksandar Markovic Add support for eight CRC-related MIPS<32|64>R6 instructions. Signed-off-by: Aleksandar Markovic --- disas/mips.c | 8 +++ target/mips/helper.h | 2 + target/mips/op_helper.c | 19 ++++++++ target/mips/translate.c | 127 ++++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 156 insertions(+) diff --git a/disas/mips.c b/disas/mips.c index dfefe5e..75c48b3 100644 --- a/disas/mips.c +++ b/disas/mips.c @@ -1409,6 +1409,14 @@ const struct mips_opcode mips_builtin_opcodes[] = {"dvp", "t", 0x41600024, 0xffe0ffff, TRAP|WR_t, 0, I32R6}, {"evp", "", 0x41600004, 0xffffffff, TRAP, 0, I32R6}, {"evp", "t", 0x41600004, 0xffe0ffff, TRAP|WR_t, 0, I32R6}, +{"crc32b", "t,v,t", 0x7c00000f, 0xfc00ff3f, WR_d | RD_s | RD_t, 0, I32R6}, +{"crc32h", "t,v,t", 0x7c00004f, 0xfc00ff3f, WR_d | RD_s | RD_t, 0, I32R6}, +{"crc32w", "t,v,t", 0x7c00008f, 0xfc00ff3f, WR_d | RD_s | RD_t, 0, I32R6}, +{"crc32d", "t,v,t", 0x7c0000cf, 0xfc00ff3f, WR_d | RD_s | RD_t, 0, I64R6}, +{"crc32cb", "t,v,t", 0x7c00010f, 0xfc00ff3f, WR_d | RD_s | RD_t, 0, I32R6}, +{"crc32ch", "t,v,t", 0x7c00014f, 0xfc00ff3f, WR_d | RD_s | RD_t, 0, I32R6}, +{"crc32cw", "t,v,t", 0x7c00018f, 0xfc00ff3f, WR_d | RD_s | RD_t, 0, I32R6}, +{"crc32cd", "t,v,t", 0x7c0001cf, 0xfc00ff3f, WR_d | RD_s | RD_t, 0, I64R6}, /* MSA */ {"sll.b", "+d,+e,+f", 0x7800000d, 0xffe0003f, WR_VD|RD_VS|RD_VT, 0, MSA}, diff --git a/target/mips/helper.h b/target/mips/helper.h index 7b8ad74..2095330 100644 --- a/target/mips/helper.h +++ b/target/mips/helper.h @@ -40,6 +40,8 @@ DEF_HELPER_FLAGS_1(bitswap, TCG_CALL_NO_RWG_SE, tl, tl) DEF_HELPER_FLAGS_1(dbitswap, TCG_CALL_NO_RWG_SE, tl, tl) #endif +DEF_HELPER_3(crc32, tl, tl, tl, i32) +DEF_HELPER_3(crc32c, tl, tl, tl, i32) DEF_HELPER_FLAGS_4(rotx, TCG_CALL_NO_RWG_SE, tl, tl, i32, i32, i32) #ifndef CONFIG_USER_ONLY diff --git a/target/mips/op_helper.c b/target/mips/op_helper.c index 18fcee4..5cd396d 100644 --- a/target/mips/op_helper.c +++ b/target/mips/op_helper.c @@ -27,6 +27,8 @@ #include "exec/memop.h" #include "sysemu/kvm.h" #include "fpu/softfloat.h" +#include "qemu/crc32c.h" +#include /*****************************************************************************/ /* Exceptions processing helpers */ @@ -350,6 +352,23 @@ target_ulong helper_rotx(target_ulong rs, uint32_t shift, uint32_t shiftx, return (int64_t)(int32_t)(uint32_t)tmp5; } +/* these crc32 functions are based on target/arm/helper-a64.c */ +target_ulong helper_crc32(target_ulong val, target_ulong m, uint32_t sz) +{ + uint8_t buf[8]; + + stq_le_p(buf, m); + return (int32_t) (crc32(val ^ 0xffffffff, buf, sz) ^ 0xffffffff); +} + +target_ulong helper_crc32c(target_ulong val, target_ulong m, uint32_t sz) +{ + uint8_t buf[8]; + + stq_le_p(buf, m); + return (int32_t) (crc32c(val, buf, sz) ^ 0xffffffff); +} + #ifndef CONFIG_USER_ONLY static inline hwaddr do_translate_address(CPUMIPSState *env, diff --git a/target/mips/translate.c b/target/mips/translate.c index 4bff585..1b38356 100644 --- a/target/mips/translate.c +++ b/target/mips/translate.c @@ -451,6 +451,7 @@ enum { OPC_LWE = 0x2F | OPC_SPECIAL3, /* R6 */ + OPC_CRC32 = 0x0F | OPC_SPECIAL3, R6_OPC_PREF = 0x35 | OPC_SPECIAL3, R6_OPC_CACHE = 0x25 | OPC_SPECIAL3, R6_OPC_LL = 0x36 | OPC_SPECIAL3, @@ -2547,6 +2548,7 @@ typedef struct DisasContext { bool nan2008; bool abs2008; bool saar; + bool crcp; } DisasContext; #define DISAS_STOP DISAS_TARGET_0 @@ -27117,11 +27119,96 @@ static void decode_opc_special2_legacy(CPUMIPSState *env, DisasContext *ctx) } } +static void gen_crc32(DisasContext *ctx, int rd, int rs, int rt, int sz, + int crc32c) +{ + TCGv t0; + TCGv t1; + TCGv_i32 tsz = tcg_const_i32(1 << sz); + uint64_t mask = 0; + + if (rd == 0) { + /* Treat as NOP. */ + return; + } + t0 = tcg_temp_new(); + t1 = tcg_temp_new(); + + gen_load_gpr(t0, rt); + gen_load_gpr(t1, rs); + + if (sz != 3) { + switch (sz) { + case 0: + mask = 0xFF; + break; + case 1: + mask = 0xFFFF; + break; + case 2: + mask = 0xFFFFFFFF; + break; + } + tcg_gen_andi_tl(t1, t1, mask); + } + + if (crc32c) { + gen_helper_crc32c(cpu_gpr[rd], t0, t1, tsz); + } else { + gen_helper_crc32(cpu_gpr[rd], t0, t1, tsz); + } + + tcg_temp_free(t0); + tcg_temp_free(t1); + tcg_temp_free_i32(tsz); +} + +static void gen_crc32b(DisasContext *ctx, int rd, int rs, int rt) +{ + gen_crc32(ctx, rd, rs, rt, 0, 0); +} + +static void gen_crc32h(DisasContext *ctx, int rd, int rs, int rt) +{ + gen_crc32(ctx, rd, rs, rt, 1, 0); +} + +static void gen_crc32w(DisasContext *ctx, int rd, int rs, int rt) +{ + gen_crc32(ctx, rd, rs, rt, 2, 0); +} + +static void gen_crc32d(DisasContext *ctx, int rd, int rs, int rt) +{ + gen_crc32(ctx, rd, rs, rt, 3, 0); +} + +static void gen_crc32cb(DisasContext *ctx, int rd, int rs, int rt) +{ + gen_crc32(ctx, rd, rs, rt, 0, 1); +} + +static void gen_crc32ch(DisasContext *ctx, int rd, int rs, int rt) +{ + gen_crc32(ctx, rd, rs, rt, 1, 1); +} + +static void gen_crc32cw(DisasContext *ctx, int rd, int rs, int rt) +{ + gen_crc32(ctx, rd, rs, rt, 2, 1); +} + +static void gen_crc32cd(DisasContext *ctx, int rd, int rs, int rt) +{ + gen_crc32(ctx, rd, rs, rt, 3, 1); +} + static void decode_opc_special3_r6(CPUMIPSState *env, DisasContext *ctx) { int rs, rt, rd, sa; uint32_t op1, op2; int16_t imm; + int sz, crc32c; rs = (ctx->opcode >> 21) & 0x1f; rt = (ctx->opcode >> 16) & 0x1f; @@ -27131,6 +27218,45 @@ static void decode_opc_special3_r6(CPUMIPSState *env, DisasContext *ctx) op1 = MASK_SPECIAL3(ctx->opcode); switch (op1) { + case OPC_CRC32: + sz = extract32(ctx->opcode, 6, 2); + crc32c = extract32(ctx->opcode, 8, 3); + if (unlikely(!ctx->crcp) || + unlikely((sz == 3) && (!(ctx->hflags & MIPS_HFLAG_64))) || + unlikely((crc32c >= 2))) { + generate_exception_end(ctx, EXCP_RI); + } + switch (sz) { + case 0: + if (crc32c) { + gen_crc32cb(ctx, rt, rs, rt); + } else { + gen_crc32b(ctx, rt, rs, rt); + } + break; + case 1: + if (crc32c) { + gen_crc32ch(ctx, rt, rs, rt); + } else { + gen_crc32h(ctx, rt, rs, rt); + } + break; + case 2: + if (crc32c) { + gen_crc32cw(ctx, rt, rs, rt); + } else { + gen_crc32w(ctx, rt, rs, rt); + } + break; + case 3: + if (crc32c) { + gen_crc32cd(ctx, rt, rs, rt); + } else { + gen_crc32d(ctx, rt, rs, rt); + } + break; + } + break; case R6_OPC_PREF: if (rt >= 24) { /* hint codes 24-31 are reserved and signal RI */ @@ -30727,6 +30853,7 @@ static void mips_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs) ctx->mrp = (env->CP0_Config5 >> CP0C5_MRP) & 1; ctx->nan2008 = (env->active_fpu.fcr31 >> FCR31_NAN2008) & 1; ctx->abs2008 = (env->active_fpu.fcr31 >> FCR31_ABS2008) & 1; + ctx->crcp = (env->CP0_Config5 >> CP0C5_CRCP) & 1; restore_cpu_state(env, ctx); #ifdef CONFIG_USER_ONLY ctx->mem_idx = MIPS_HFLAG_UM;